William fford service



w. F. SERVICE.

ROTOR FOR TIMERS.

APPLICATION FILED JAN-15, 1918.

1,334, 1 77. Patented Mar. 16, 1920.

lNVENTOR ATTORNEY ITED STATES PATENT OFFICE.

WILLIAM FFORD SERVICE; v013 POUGHKEEPSIE, NEW YORK, ASSIGNOR, BY MESNEASSIGNMENTS, T0 CHARLES HARDY AND CHARLES H. POTTER, BOTH OF NEW YORK,11. Y.

Application filed January 15, 1918.

To all whom it may concern:

Be it knownthat I, WILLIAM From) SERV- ron, a citizen of the United.States, and a resident of Poughkeepsie, in the county of Dutchess andState of New York, have invented certain new and useful Improvements inRotors for Timers, of which the following is a specification.

The invention relates to timers forinternal combustion engines, and moreparticu larly to the rotor member thereof which is designed to operatewithin a suitable casing or the like to periodically make contact withthe contactmembers retained by or embedded'in the said casing. Theinvention relates more particularly to a rotor member of this characterembodying a pivotally mounted contact roller.

An object of the invention is to provide a rotor "which will bethoroughly practical and eiiicient and which may at the same time bemanufactured at small cost.

A further object is to provide a rotor comprising a. minimum of partseach of which is of simple'form and in which the parts may beeasily andquickly assembled.

A more detailed object is to provide a rotor including a pivotallymounted member for carrying the contact roller, said member being madefrom sheet metal bent into U- shape so as to provide spaced arms betweenwhich both the roller and the pivotal support of said member may bepositioned, and in which the connecting portion of the U is adapted toreceive resilient pressure from a suitable spring and is also adapted toconstitute an eflicient stop for limiting swinging movement of themember.

Other objects and aims of the invention, more or less specific thanthose referred to above, will be in part obvious and in part pointed outin the course of the following description of the elements,combinations, arrangements of parts and applications of principles,constituting the invention; and the scope of protection contemplatedwill be indicated in the appended claims.

In the accompanying drawings which are to be taken as a part of thisspecification, and in which I have shown merely a preferred form ofembodiment of the invention:

Figure 1 is a plan of the improved rotor.

Specification of Letters Patent.

ROTOR FOR TIMERS.

Patented Mar. 16, 1920.

Serial No. 211,944.

- Fig. 2 is an elevation thereof; and Fig. 3 an end view.

Similar characters of reference designate corresponding parts throughoutthe several vlews.

Referring to the drawings, 10 designates a carrier member or sleevedesigned to be connected to a shaft of the internal combustion engine(not shown) for rotation therewith. This carrier is provided with a pairof outwardly extending ears 11 oppositely perforated near the ends toreceive a pivot pin or support 12 upon which is mounted, preferablyoutside of said ears, the arms of a U-shaped member 13, which may beheld in pivotal relation to said cars by upsetting the ends of said pin.At the free ends of the U-shaped member, beyond the said pivot pin 12,is journaled a contact roller 14 through which contact may be made, asis well understood. In order to hold this roller out vardly under apredetermined yielding pressure suflicient to effect a proper contact, aspring 15 is coiled about the pivot pin 12-, one end thereof beingextended downwardly to bear against the carrier and the other end beingextended backwardly to bear upon the outer edge of the connectingportion of the U-shaped member 13.

The ears 11 are spaced apart a suitable distance and the spring 15 ispreferably p0- sitioned between said cars so that it is effectively heldagainst accidental dislodgment at all times. The two arms of theU-shaped member 13 preferably lie against the outer flat surfaces of theears and the connecting portion as 16, of said U-shaped member extendsacross the edges of the ears in a position to engage each of the ears atthe points 17 for limiting swinging movement of the U-sha ed member bythe spring. The points of engagement of the portion 16 with the cars arethus spaced apart, one point hein adjacent each of the arms of theU-shaped member so that each serves as astop for its respective arm. Atthe same time the intermediate portion of the part 16 provides anadmirable surface to be engaged by the spring 15.

The U-shaped member as thus described. is of very simple contour, beingmade from a single piece of sheet metal appropriately shaped and bent.The roller 14 is mounted appropriate surfaceis attained for engage mentby the end of the spring 15. a

As many changes could be made in this construction without departingfrom the scope of the invention as defined in the following claims, itis intended that all matter contained in the above description, or shownin the accompanying drawings, shall be -interpreted as illustrative onlyand not in a limiting sense. 7

I claim: V J

1. A rotor for timers, comprising a carrier, a contact roller, a spring,and a supporting member for-said roller, said supporting member being ofU-shape providing a pair of arms embracing both the roller and a part ofthe carrier and being pivotally connected both to said roller andcarrier and providing also a connecting portion engaged by the spring toswing the sup porting member in one direction, said 0011- nectmg portionalso being disposed to engage aportion of the carrier to limit swingthesupporting member by ing movement of the Spring; i V

2. A rotor for timers, comprising a carrier, a contact roller, a spring,and a supporting member for said roller, said sup porting member beingformed from a single mea re piece of-sheet material bent into U-shapeproviding a pair of arms anda connecting portion between said arms, boththe roller and aportion of the carrier being received between said armsand being pivotallyiconnected with the'arms, and said connectingportionconstituting means engaged by the spring for swingingthesupporting member about its pivotal connection with the carrier. '7 V r3LA rotor fortimers,comprising a carrier, a contact roller, the carrierhaving a pair of ears projecting "therefrom' spaced apart, a supportingmember for said roller,

said supporting member being of U-shape providing a; pair of armsembracing said roller and both of said ears, a pivot pin'pivotallyconnecting said arms with said ears, said pivot pm traversing the spacebetween said ears, means pivotally connecting the roller between saidarms spaced'from the ears, the U-shaped supporting member providing alsoa-connecting portion extending between its arms, a spring carried bysaid pivot pin between said ears havinga portion projectingoutwardlyfrom between said ears engaging the connecting portion of the supportingmember to swing the supporting member in one direction, andsaidconnecting portion also being disposed to engage portions of each ofsaid ears to limit swinging movement of the supporting member by thespring. v

Signed at New York city, in the county of New York and State of NewYork, this 28th day of December,A. D. 1917.

WILLIAM From) 'snnvrcn.

